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2Published 1993“...The Survey ;...”
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3Published 1964“...The Survey,...”
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8Published 1964“...The Survey,...”
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15by Simons, Frank S. (Frank Stanton), 1927-“...U.S. Geological Survey,...”
Published 1985
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16by Simons, Frank S. (Frank Stanton), 1917-“...U.S. Geological Survey,...”
Published 1984
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17by McGrew, Laura W. (Laura Wenger), 1921-“...U.S. Geological Survey,...”
Published 1977
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18by Kimball, Briant A.“...U.S. Geological Survey,...”
Published 1999
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19Published 1984“...U.S. Dept. of the Interior, Geological Survey,...”
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20by Roberts, Albert Eugene, 1921-“...U.S. Department of the Interior, Geological Survey,...”
Published 1966
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